a-8 при a= -2

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2a+5

If `a = -2`, then `2a + 5 = 2(-2) + 5 = 1`.

If `a = 8`, then `2a + 5 = 2(8) + 5 = 21`.

Therefore, when `a` is between `-2` and `8`, the value of `2a + 5` will be between `1` and `21`.